654 Zelinda
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 4 January 1908 |
| Designations | |
| 1908 BM | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.29 yr (39553 d) |
| Aphelion | 2.8288 AU (423.18 Gm) |
| Perihelion | 1.7653 AU (264.09 Gm) |
| 2.2970 AU (343.63 Gm) | |
| Eccentricity | 0.23150 |
| 1,271.6 d (3.48 yr) | |
| 51.9052° | |
| 0° 16m 59.196s / day | |
| Inclination | 18.125° |
| 278.460° | |
| 214.008° | |
| Physical characteristics | |
| 125.90±4.49 km (composite estimate) 160.736±1.342 km | |
| Mass | (1.22±0.351)×1018 kg (composite estimate) (2.25±0.57)×1018 kg |
Mean density | 1.17±0.36 g/cm3 1.03 g/cm3 |
| 31.735 h (1.3223 d) | |
| 0.027±0.005 | |
| 8.60 | |
654 Zelinda is a minor planet orbiting the Sun that was discovered on 4 January 1908 by German astronomer August Kopff. It is orbiting the Sun at a distance of 2.297 AU with an orbital eccentricity of 0.23 and a period of 3.48 yr. The orbital plane is inclined at an angle of 18.1° to the plane of the ecliptic. On favorable oppositions, it can be as bright as magnitude 10.0, as observed on January 30, 2016.
In 1988, this object was detected with radar from the Arecibo Observatory at a distance of 0.89 AU. The measured radar cross-section was 2,200 km2. Measurements made using the adaptive optics system at the W. M. Keck Observatory give a diameter estimate of 131 km. This is 13% smaller than the diameter estimated from the IRAS observatory measurements. It is roughly triangular in shape, and spins with a synodic rotation period of 31.735 h.
Notes
- ↑ Calculated from its standard gravitational parameter GM = 0.150±0.038 km3/s2.
- ↑ Assuming a diameter of 161 km.
References
- 1 2 3 4 5 6 "654 Zelinda (1908 BM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 7 May 2016.
- 1 2 3 Carry, B.; Vachier, F.; Berthier, J.; Marsset, M.; Vernazza, P.; Grice, J.; Merline, W. J.; Lagadec, E.; Fienga, A.; Conrad, A.; Podlewska-Gaca, E.; Santana-Ros, T.; Viikinkoski, M.; Hanuš, J.; Dumas, C.; et al. (March 2019). "Homogeneous internal structure of CM-like asteroid (41) Daphne". Astronomy & Astrophysics. 623: A132. arXiv:1901.01890. Bibcode:2019A&A...623A.132C. doi:10.1051/0004-6361/201833898. ISSN 0004-6361. S2CID 84831411.
- 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
- ↑ Ostro, S. J.; et al. (October 1991), "Asteroid radar astrometry", Astronomical Journal, vol. 102, pp. 1490–1502, Bibcode:1991AJ....102.1490O, doi:10.1086/115975.
- ↑ Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus, vol. 185, no. 1, pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813, retrieved 27 March 2013.
External links
- Lightcurve plot of 654 Zelinda, Palmer Divide Observatory, B. D. Warner (2007)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 654 Zelinda at AstDyS-2, Asteroids—Dynamic Site
- 654 Zelinda at the JPL Small-Body Database
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